75-kyr paired mean summer temperature (MST) and moisture balance (BIT-index) data for east

373 paired measurements of Mean Summer Temperature (MST) and moisture balance (BIT-index) derived from GDGT distributions in the DeepCHALLA sediment sequence. The data series covers approximately 75,000 years for eastern equatorial Africa, with sediment ages based on a published model. This proxy climate record was produced by A.J. Baxter of Utrecht University.

Use Cases

• Reconstructing past summer temperature trends based on the brGDGT-derived Mean Summer Temperature (MST) proxy.
• Analyzing historical lake water-balance variations based on the branched versus isoprenoid tetraether (BIT) index.
• Calibrating or validating climate models for eastern Africa using a high-resolution, 75,000-year paleoclimate record.
• Investigating the coupling between temperature and hydrological changes in equatorial Africa over millennial timescales.

Strengths

• Contains 373 discrete paired measurements, providing a high-resolution time series.
• Covers a long temporal span of approximately 75,000 years.
• Data is paired, linking temperature (MST) and moisture balance (BIT-index) proxies for concurrent analysis.
• Uses established calculation methods (Pearson et al., 2011; Hopmans et al., 2004) and a published age model.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.

Provenance

Source

Utrecht University

Collection Method

GDGT (Glycerol Dialkyl Glycerol Tetraether) distributions measured in 373 discrete sediment samples from the DeepCHALLA sequence.

Time Range

Approximately 75,000 years

Geography

Eastern equatorial Africa (Lake Chala)